We're going to solve 9905 multiplied by 6842
9905 × 6842 = 6842 × (9905)
+ 6842 × 5 that results in 34210
+ 6842 × 00 which equals 0
+ 6842 × 900 giving us 6157800
+ 6842 × 9000 that results in 61578000

= 67770010
